Insulator



,Nov. 13,1923. 1,474,256

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INVENTOR m WalierY/T'ocflam QZ J 23M ,4 TTOR/VEYS Patented Nov. 13, 1923.

. UNITED STATES WALTER T. GODDARD, OF VICTOR, NEW YORK, ASSIGNOR, BY MESNE ASSIGNMENTS, K TO LOCKE INSULATOR, CORPORATION, OF BALTIMORE, MARYLAND, A CORPORA- TION OF MARYLAND.

PATENT-OFFICE;

INSULATOR. P

Application filed March 14 1917. Serial No. 154,681.

To all whom it me concern:

Be it known that ,WALTER T. GODDARD, of Victor, in the county of Ontarioand State of New York, have invented certain'new 5 and useful Improvements in Insulators; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this speci- 1 fication, and to the reference characters marked thereon.

My invention has to do with the general class or insulators and more particularly with a novel application oi such structures l for use in supporting a spiral or coiled conductor such as used in wireless or radioop erations. In its, closer aspects, the invention is intended to afiord a column type insulated support which can be made up of independent units so as to extend it far beyond the limitations of a unitary or one piece post orcolumn, and at the same time retain the strength and stability of. an integral construction. A further purpose of the im- 2 provement is to permit oh building up' such a column type insulator to any desired height by employing a greater or less numher of independent units and securing them together in such manner as to alford complete stability and rigidity. To theseand other ends the invention consists in certain improvements and combinations of parts, all as will be hereinafter more fully described, the novel features being pointed out in the claims at the end of the specification in the drawings: Figure l is a side elevation showing an application of the invention where a series of insulated supports are employed for retaming a spiral or coiled conductor;

Figure 2 is a plan view of the same; Figure 3 is a vertical sectional view through one of the insulators vwith parts broken away;

Figure l is a plan view oi the structure shown in Figure 3; v

Figure 5 is ,a sectional view taken transversely on theline 5=*--5' of Figure 3 with parts in elevation; a

Fi re 6 is a plan view of one of the in sulatmg units;

gigure 7 is a side elevation of the same an Figure 8 is a Vertical sectional view illustrating a I modified arrangement.

Similar reference characters throughout the several views indicate the same parts.

The invention is here exemplified in a practical embodiment such as employed in radio electric work for supporting a V451"- tically arranged conducting coil or cable 1.

.Such huge coils or wire sometimes extend for a distance oi ten feet or more for carry ing high voltage currents in high power radio stations, and it has been found quite impracticable to make a single integral post large enou h or high enough for this class of work. ccording to the present improvement, I employ a series of insulators, each in the form of a column, and composed of a multiplicity of insulating units that are tied or bound together by tension members so.

as to place the individual insulating units in a state of compression and thereby obtain the same eflect, from the standpoint of strength stability and strain resisting qualities, as is obtained from a small integral post,

Each insulator, which l refer to as being of the column type, composes a series of insulating units, preferably. of annular form, such as designated by 2, and having a Peripheral rib or flange 3. The rib 3 of each in: sulating unit is cutaway to form a groove 4:

. on the upper surface, which receives a por tion of a convolution oil the conductioncoil as indicated in Figure 3. The 'insufitingunits are superposed one above another, prelerably supported one upon the other and re ceive the diiderent convolutions oi the coil the entire assemblage being mounted on a suitable base 5. The variousinsulating llll units 2 are held in rigid relation and under.

a state of compression by suitable tension means which preferably embodies a scrim oi tension members in the form of rods or bars 6 of insulating material joined by any convenient connecting devices such as the yoke 'Z' and nuts 8, which permit the column to be built to any desirable height by employing the sections or insulating rods e and using as many as may be necessary. The tension members are connected at the ends to the base 5 and to the top plate 9 respectively through oke members 10 and 11 which may be ti tened to any desired extent, thus connecting the uppermost and lowermost insulating units and imparting to the column the necessary rigid and stable relation between the insulating units and in this manner constituting in effect a solid structure. It is desirable to provide interlocking means between the adjacent insulating units of the column and for this purpose, I prefer to employ recesses or pockets 12 in the adjacent surfaces of the insulating units, and to receive balls 13 or other suitable devices that prevent relative turning of the insulating units and serve to hold the entire structur'eof the column together the same as one integral, rigid mass. Instead of the pockets l2 and balls 13, I may employ the. arrangement shown in Figure 8 which consists in providing a set screw 14 in one insulating unit and engaging a cooperating opening imthe adjacent insulating unit, the set screws 14 being preferably in staggered relation as indicated by the dotted and full lines.

I claim as my invention:

1. A eolumnitype insulator comprising a series of hollow ring-like insulating units superposed one above the other and each provided with a rib having cut away portions forming a groove adapted to support one of the convolutions of a vertically arranged conducting coil, and a plurality of tensioning members extending through the openings in said units and spaced therefrom and acting to hold said units in position.

2. A column type insulator comprising a series of annular insulating units superposed one upon the other and each provided with a flange cut away to form a lip for receiving portions of, successive con-volutions of a conducting coil, interlockingmeans between adjacent units acting to prevent their relative movement, and tension rods formed of sectlons of insulating material and connectmg the uppermost and lowermost units of the series and acting to hold all the insulating units in a state of compression.

3. An insulator support for a conducting coil, comprising a plurality of insulating units superposed one above the other, each of said units being of annular form and provided with a circumferential rib having portions cut away to form an upwardly open groove, said groove being adapted to receive a portion of a convolution of the conducting coil, the grooves of successive units being arranged on the same side of the support, and interlocking means arranged between adjacent surfaces of the units.

4:. A columln type insulator comprising a series of insulating units superposed one above another and provided with segmental grooves for supporting different convolutions of a conducting coil, tension means comprising a plurality of insulating members extending through openings provided in the insulating units and each adapted to be spaced from the adjacent portions of said units. said means connecting the insulating units and-serving to hold them in a state of compression, and means interposed between and engaging adjacent units for preventing "relative turning movement thereof.

5. A column type of insulator comprising. a series of annular insula-tin units superposed one above another and provided Wit-h grooves for supporting different convolutions of a conducting coil, a metallic base member for supporting the insulator units, ametallic cap member and tensioning means connecting the said base member with the said cap member, said tensionin means com rising a plurality of insulated rods space from the adjacent portions of said units, said rods serving to hold the insulating units in a. state of compression.

WALTER T. GoDDARD. 

